Unter anderem:

Figure 43 shows that the safety issue system reliability is the highest both in terms of number of occurrences and risk. A part of those occurrences contain engine failures and engine performance problems that force the aircraft to land. There is also a problem created by insufficient information coming from the investigation reports, creating the illusion that the problem has to do with the aircraft systems due to lack of HF/HP coding. In general, engine failure by itself is not an issue that should cause a fatal outcome as the glide ratio of general aviation aircraft is generally good and should enable pilots to find a suitable landing area, given their pre-flight preparation and sufficient altitude at the time of the failure. This issue has strong links to another safety issue called ‘handling of technical failures’. The latter issue focuses on the pilot´s actions after the engine failure. Many of the accidents under this issue are fatal accidents, therefore high risk score has been attributed. The safety issues of perception and situational awareness, decision making and planning, and flight planning and preparation all relate to the ‘handling of technical failures safety issue, which highlights that it is the pilot’s actions that are either precursors or resulting actions in their attempt to recover the situation. These three HF/HP issues highlight the importance of planning each flight carefully and of anticipating various scenarios in the planning. Such scenario planning will allow the pilot can react correctly to the safety critical situation and perhaps avoid a serious outcome – specifically loss of control situations.